Simulink Control Design™ - MathWorks

For this system, the phase margin is 90 degrees at a crossover frequency of 0.4 rad/s.

Compute Open-Loop Response at the Command Line

This example shows how to compute a linear model of the combined controller-plant

system without the effects of the feedback signal. You can analyze the resulting linear

model using, for example, a Bode plot.

Open Simulink model.

sys = 'watertank';

open_system(sys)

2 Linearization